Titanium diboride (TiB2) is a low-density refractory material belonging to the family of ultra-high temperature ceramics (UHTCs). This paper reports on the production and microstructural and optical characterization of nearly fully dense TiB2, with particular interest to its potential utilization as novel thermal solar absorber. Monolithic bulk samples are produced starting from elemental react...

Composite materials are playing major and vital role in various sectors especially in aeronautical, defence and automotive sectors. It is preferable because of obtaining unique characteristics such as high specific strength, high stiffness, high corrosion resistance and low density. In the present work deals with the influence of Titanium carbide and Titanium boride reinforcements in different ...

TiAlB coatings with different compositions were deposited by co-sputtering from TiAl and TiB2 targets onto AISI316 stainless steel substrates at a temperature of 170(C. The stoichiometry and nanostructure have been studied by x-ray photoelectron spectroscopy (XPS), x-ray diffraction (XRD) and transmission electron microscopy (TEM). Analysis of the XPS spectra suggests the presence of phases in ...

TIG arc additive manufacturing experiments were performed utilizing TiB2 nanoparticle-reinforced toward to 7075 aluminum alloy welding wire, and the microstructure mechanical properties corresponding different locations of plate investigated. At top location deposited layer, was characterized by fine dendrite induced solidification, equiaxed grain predominant at middle location. The size bottom...

Copper matrix composite reinforced by 1wt.% TiB2 particles was prepared using in situ reaction of Cu-1.4wt.% Ti and Cu-0.7wt.% B by rapid solidification and subsequent heat treatment for 1-20 hrs at 900ºC. High-resolution transmission electron microscopy (HRTEM) characterization showed that primary TiB2 particles were formed in liquid copper. Heat treatment of as-solidified samples led to ...

Aluminum (Al) matrix composites with boron carbide (B4C) reinforcements were fabricated by solid state powder metallurgy using the hot-pressing process. Composite materials at different volume fractions of B4C particles, ranging from 2% to 12%, evaluate impact on thermal and mechanical properties composite materials. Thermal properties, such as conductivity (TC) coefficient expansion (CTE), mea...

The assessed binary phase diagram of boron-carbon exhibits a single intrinsically disordered alloy phase designated “B4C” with rhombohedral symmetry occupying a broad composition range that falls just short of the nominal carbon content of 20%. As this composition range is nearly temperature independent, the phase diagram suggests a violation of the third law of thermodynamics, which typically ...